sp01u4p3 - Unit Four Brooker Creek Preserve The Brooker...

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Unit Four Brooker Creek Preserve Project Oceanography Spring 2001 55 The Brooker Creek Watershed Interactive Database Information in this packet is taken from a website developed by Conrod Associates for the Pinellas County Board of County Commissioners. Lesson Objectives: Students will be able to do the following: Name three water quality parameters that are being measured at Brooker Creek Compare traditional meteorological instruments to those used at Brooker Creek Explain how to set up a database Key concepts: spectrometric instruments, electronic sensors, telemetry, “real- time” data, databases Parameters and Sensors at Brooker Creek As we discussed in the first program, Brooker Creek provides an opportunity to study a watershed and its impact on water quality without leaving your office or classroom. In order to do this, scientists placed sensors in three areas of Brooker Creek: one upstream, one midstream, and one downstream. These sensors collect a variety of data relating to the chemical and physical aspects of the water that flows through Brooker Creek. Scientists also set up web cams to take pictures of the area and supply additional information. The chemical parameters of the water include such characteristics as pH and dissolved oxygen levels. In the past we have measured these characteristics using chemical test kits. The researchers at Brooker Creek Preserve measure these parameters using light sensitive sensors that are only a few inches long. These spectrometric instruments measure the energy levels associated with various light wavelengths. (For additional information on spectrometry and light wavelengths, see the Project Oceanography Spring 1999 packet for Ocean Technology and the Fall 2000 packet for Sounds of the Sea Lesson 1.) The physical parameters measured include the surface water level, precipitation , and related meteorological parameters such as wind speed, barometric pressure , and temperature. The surficial water level is the depth of the water
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Unit Four Brooker Creek Preserve Project Oceanography Spring 2001 56 in the creek. Scientists use a sensor based on the acoustic properties of the water. It works much like echolocation in that the instrument measures the time it takes a sound to travel the distance from the water’s surface to the bottom of the creek bed. The device used to measure precipitation is a simple tube attached to an electronic sensor. The sensor is activated in response to the water level in the tube. It then measures the capacity of the tube and flushes the system after the measurement has been recorded. Sensors attached to towers measure the atmospheric parameters. The mechanical parts of these instruments are similar to traditional ones except they are connected to electronic mechanisms that measure and record the information and send it to a computer system. The use of electronic sensors and
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This note was uploaded on 07/31/2011 for the course OCB 6050 taught by Professor Staff during the Spring '11 term at University of South Florida - Tampa.

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sp01u4p3 - Unit Four Brooker Creek Preserve The Brooker...

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